farmer



Feb. 7, 1956 G. FARMER 2,733,788

FRAME CORNER CONSTRUCTION Filed Dec. 27, 1951 2 Sheets-Sheet l INVENTOR.GEORGE L. fi RMER Ayi Feb. 7, 1956 e. L. FARMER 2,

FRAME CORNER CONSTRUCTION Filed Dec. 27, 1951 2 hee s- 2 INVENTOR. ifGEORGE L EQRMER United States Patent" FRAME CORNER CONSTRUCTION George1L. Farmer, Louisville, Ky. Application December 27, 1951, Serial No.263,625

1 Claim. Cl; 189-76) This invention relates to preformed stockforforming the frames of storm sashes-screens, and the like.

An object of this invention is to provide a stock member which can beused in forming either a screen or a storm sash.

A further object of this invention is to provide a stock member fromwhich screen and storm sash-frames can be formed which areinterchangeable. V

A further object of this invention is to'provide astock member which canbe used for forming the cross bar of the frame of either a storm sash ora screen.

A further object of this invention is to provide means for joiningorsecuring such stock members at the corners of the frames of screens'orstorm sashes;

The above and other objects andfeatures of the invention will in part beapparent and will in part be obvious from the following detaileddescription, and the drawings, in which:

Figure 1 is a perspective view showing a screen constructed from stockmembers which are formed in accordance with an embodiment of thisinvention;

Fig. 2 is a perspective view showing a storm sash constructed from thesame stock members;

Fig. 3 is a perspective view showing a corner block used in joiningstock members;

Fig. 4 is an enlarged-perspective'view showingdeta'ils of a jointbetween one side member and the cross bar of the screen illustrated inFig. 1;part of the screen cloth being removed for clarity of detail;

Fig. 5 is a view'in section taken along a line 5--5 in Fig. 2;

Fig. dis a perspective view showing a sash holding clamp which forms aportion of the sash illustrated in Fig. 2;

Fig. 7 is a view in'vertical section showingthe sash illustrated in Fig.2 mounted inassociation with a second sash; and Fig. 8 is aperspective'view showing a spring which forms a part of the sashillustrated in Fig. 2.

In the following detailed description and the drawings, like referencecharacters indicate like parts.

In Figure l is illustrated a screen 14 having a frame 15 formed ofpreformed stock members which are constructed in accordance with thisinvention. Frame 15 includes side members 16 and top and bottom members17 and 18, each of which is formed from the same stock, the memberstherefor. being identical in cross section. The stock from which themembers of frame 15 are formed is tubular, and formed from sheet metal.

Details of construction of one of the side frame members 16 are shown inFig. 4. Since the top, bottom and side frame members are all formed fromstock sections of the same construction as side frame member 16, onlyside frame member 16 will be described in detail.

Side member 16 is formed from 'a ribbon or strip of sheet metal bent toform a hollow tubular sheet metal member of rectangular cross section.One wall 26 of the member 16 is provided with a trough 27 offsetinwardly into the hollow thereof at the joint between edges of thestrip. The trough is formed of a U- or channel-shape. One arm of thetrough is integral with the wall 26, while the other armthereof restsflatwise against wall 28 of the tubular member. Wall 28 terminates in areturn bend or hook 29 which overlies andclamps the free edge or tongue30 of trough 27. Moreover, wall 28 terminates short of the plane of wall26 so that, when screen cloth 31 is clampedin the trough 27, the planeof the screen cloth'is just inside the plane of wall 26 of frame member16. One edge of the screen cloth is held in place in trough 27 by ahollow tubular clamping member 32. Member 32 is formed of a resilientrubber-like material and clamps the screen cloth in place. As indicatedin Fig. 4, hook 29 projects into the trough so that the neck of thetrough is narrower than the lower portion thereof and the member 32firmly clamps the screen cloth in place in the bottom of the trough.

Where a screen is to be formed which is sufficiently large to requiretwo sections of screen cloth, the sections are separated by a cross bar37, as shown in Figs. 1 and 4. As shown in Fig. 4, cross bar 37 isformed from a tubular sheet metal member of rectangular cross section.One wall 38 of the cross bar is provided with a pair of troughs 39 and40 oliset inwardly thereof adjacent side walls 41 and 42, respectively.Troughs 39 and 40 receive edges of sections of screen cloth. Inaddition, a trough 43 is formed in wall 44 of the cross bar for use whenthe cross bar is assembled in a storm sash, as willbe described ingreater detail hereinafter. Trough 39 is formed similarly to trough 27of the side member 16 and is so constructed that book edge 45 thereofextends into the trough, and the top or neck of the trough is narrowerthan the base thereof. Side walls-4l and 42-terminate short of the planeof wall 38 so that the screen cloth received therein is held inside orbelow wall 38.-

Trough 40 is formed integrally with walls 38 and 42; At the juncturebetween wall 42 and the flange of trough 40 adjacent thereto is formed abulge or bead 46 so that the mouth of trough 40 is narrower than thebase, and screen cloth-can be firmly held therein. Trough 43 is formedin the same manner as trough 4-0 but is formed in wall 44 of the'crossbar.

The same stockmembers as are used informing the framework of screen 14(Fig. 1 may, also be used in forming-the frameworkof the storm sash 47illustrated in Fig. 2. In screen 14 (Fig. l) the members are disposedwith their troughs facing forwardly. On the other hand, in the stormsash (Fig. 2) the members are placed with their troughs facing inwardlyso that the troughs can receive panes of glassas indicated at 49 in Fig.2. The

edges of the glass panes are received in the troughs. The: troughs maybeprovided with sealing strips as indicated at 53 in Fig. 5, or withputty or other appropriate sealing material in the troughs to hold thepanes of glass firmly in place.

The ends of the frame members at the corners of the screens and stormsashes are mitered and are held together by internal corner blocks 54,as indicated in Figs. l-3 and 5. Each of the corner blocks is of theconstruction illustrated in Figs. 3 and 5 and is made from sheet metalformed to provide arms or flanges 56 and 57 which project at rightangles to each other and fit into adjoining ends of stock members tohold the members in assembled relation. Each arm is of U-shape insection, as shown in Fig. 5, and the arms fit tightly in the ends of theframe members with one leg of the U engaging the base of the trough inone frame member and the other leg of the U engaging the wall of theframe member in which the trough is formed (see Fig. 5). In addition,each arm is provided with a linear corrugation 58, as shown in Fig. 3,for purposes to be described more fully hereinafter, and transversegrooves 59. The transverse grooves are employed in locking the framemembers upon the corner block. When the arms of corner block 19 aredisposed inside the ends of adjoining members, the mitered edges of theends of the members meet in a smooth joint as shown in Figs. 1 and 2.The frame members are held in place by lugs 61 (Fig. l). The lugs arepunched or deformed from the material of the frame members after theframe members and corner blocks are assembled, and the lugs seat ingrooves 59 in the flanges of the corner blocks.

The storm sash 47 illustrated in Figs. 2 and is received inchannel-shaped guides, one of which is shown at 76 in Fig. 5. When inposition in the guides, sash 33 is held in place by means of a spring77. Spring 77, as shown in Fig. 6, includes two arms 78 and 79 whichproject as the arms of an inverted U. Arm 78 is disposed between cornerblock 54 and a wall 81 of side member 82 and is received in the groove58 of one of the arms of the corner block. Spring arm 79, on the otherhand, extends outwardly of the sash. A pull rod 83 is connected tospring arm 79 and projects through the walls of side member 82 to theinside of side member 82. The pull rod carries a finger grip 84 at theinner end thereof by means of which member 83 can be drawn inwardly torelease the clamping action of the spring. When the clamping member isreleased, a clamping knob 86 at the head of rod 83 is held outwardly byspring 77 in engagement with guide 76, and, when the sash is advanced toproper position, knob 86 is seated in a well 87 in guide 76.

Sash 47 is also provided with a sealing strip 88 of spring metal or thelike as shown in Figs. 2, 7 and 8. As shown in Fig. 8, member 88 isgenerally of C-shape in section, and extends around lower frame member81 with an arm thereof engaging the lower wall of member 89 while theother arm thereof is seated in the trough of member 89. Member 88 servesto form a tight joint between sash 47 and another generally similar sash91.

As shown, the stock members are generally of square cross section sothat the screens and storm sash are interchangeable and both screens andstorm sash may be constructed from the same stock members. In addition,the troughs of the side members are so constructed that the distance A(Fig. 5) between the base of the trough and the side wall parallel tothe base of the trough is equal to the distance B from the inner flangeof the trough to the wall parallel to the inner flange so that in anyposition of the block 54 in the side member, one flange of one armthereof engages the trough to hold the corner block firmly in the sidemembers.

Screens and storm sashes of various shapes and sizes can be formed fromthe stock sections of this invention, and it is only necessary to cutstock members to proper size and join them together to quickly andreadily form storm sashes and screens of any desired shape or size.

The stock members disclosed above and illustrated in 4 the drawings aresubject to structural modification without departing from-the spirit andscope of the appended claim.

Having described my invention, what is new and desired to secure byLetters Patent is:

A frame corner construction which comprises a pair of hollow tubularsheet metal members of substantially rectangular cross section, meetingends of said members being mitred, one wall of each member having atrough offset inwardly into the hollow thereof along an edge of saidwall, the other three walls of each of said members being substantiallyflat, the troughs of the members being in communication, .a corner piecehaving an arm disposed inside each of the adjoining ends, each arm ofthe corner piece being of channel shape in section, one flange of eacharm being narrower than the other flange, the edge of the narrow flangeof each arm engaging the trough of its associated member, the edge ofthe other flange of each arm engaging one of the walls of its associatedmember, the web and each of the flanges of each arm of the corner pieceengaging flatwise one of the fiat walls of the member associatedtherewith, whereby the arms of the corner member firmly engage thetubular members to hold the tubular members in assembled relation, theweb of one of the arms of the corner piece having a lengthwise groovetherein to form a space between said one of the arms and the one of theflat walls associated with the web thereof, a spring member of U-shapehaving one arm received in said space and another arm overlying said oneof the walls, said web of said one of the arms of the corner piece andsaid one of the flat walls of the member associated therewith havingaligned openings therethrough, and a pull rod attached to the otherspring arm and extending through said opening in said one of the arms ofthe corner piece and through said opening in said one of the flat wallsof the member associated therewith for drawing the other spring armtoward said one of the members.

References Cited in the file of this patent UNITED STATES PATENTS738,939 Rapp Sept. 15, 1903 834,968 Christenson Nov. 6, 1906 1,111,086Olson Sept. 22, 1914 1,233,310 Carlson et al July 17, 1917 1,797,123Bohnsack Mar. 17, 1931 2,051,754 Tashjian et a1. Aug. 18, 1936 2,200,547Grady et a1. May 14, 1940 2,416,659 Wolf Feb. 25, 1947 2,437,598Goldberg Mar. 9, 1948 2,445,428 Goldberg July 20, 1948 2,447,346 KrantzAug. 17, 1948 2,599,032 Widen June 3, 1952 2,605,866 Iernstrom Aug. 5,1952 2,701,898 Watson Feb. 15, 1955

